Where does this definition of air preheater come from?
This entry for air preheater is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Does air preheater appear elsewhere on Lughet?
Yes — air preheater appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.